Extruded polystyrene xps easily recognized by its blue green or pink color falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq.
													
																	Expanded polystyrene foam board insulation r value. 
									
	
		
	
																	Expanded polystyrene insulation is similar to the foam used for packing peanuts and it s typically used for insulated concrete forms also knows as icf s. 
																	R 8 expanded polystyrene foam board insulation 2 x 4 x 8 please note. 
																	1 in x 4 ft x 8 ft. 
																	0 9375 in x 3 875 ft x 7 875 ft expanded polystyrene foam board insulation item 15358 model 451156 the higher the r value the greater the insulating power. 
															
													
									
	
		
	
																	R 2 65 polystyrene panel insulation sheathing 6 pack model 150705 8 38 package 8 38. 
																	Inventory is sold and received continuously throughout the day. 
																	Types of insulating boards choose from three types of insulating foam core boards for wall insulation. 
																	This product typically has an r value of 3 6 to 4 0 per inch of thickness. 
															
													
									
	
		
	
																	Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. 
																	Each type comes with unique advantages. 
																	For a 1 in thick 4 8 panel. 
																	Therefore the quantity shown may not be available when you get to the store.